Anabolic/anticatabolic and adaptogenic effects of 24-epibrassinolide on Lupinus angustifolius: causes and consequences

Publication date: Available online 21 November 2019Source: SteroidsAuthor(s): Olga L. Kandelinskaya, Helena R. Grischenko, Vladimir A. Кhripach, Vladimir N. Zhabinskii, Lylia E. Kartizhova, Yuriy K. Shashko, Olga V. Kosmachevskaya, Elvira I. Nasybullina, Alexey F. TopunovAbstractLupinus angustifolius L. is a legume culture known as a source of valuable feed protein and the N2-fixator for improving soil fertility. However, its low ecological resistance does not allow for a stable yield of the crop. Earlier, we have shown that steroid phytohormone 24-epibrassinolide (EBR) increases the tolerance of lupine to chlorine ions by activating the protective proteins in ripening seeds (such as proteinase inhibitors that prevent protein breakdown) and lectins. Here we investigated the effect of EBR on the functional status of the N2-fixing system in root nodules, protein synthesis in ripening seeds and the resistance of lupine plants to various pathogens. It was found that EBR enhanced the nodulation process, N2-fixing activity of nitrogenase and the accumulation of poly-β-hydroxybutirate in the bacteroides, increased the leghemoglobin content in the nodules as well as the metabolic activity of bacteroides. According to data on the inclusion of 14C-leucine in maturing seed proteins, EBR increased the accumulation of protein in them against the background of a short-term decrease in protein synthesis and its subsequent regeneration to the control level. Gradual inhibition of protein sy...
Source: Steroids - Category: Drugs & Pharmacology Source Type: research